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NVMe Cache slow writes

Sanke
in General Support

Featured Replies

Hey Guys!

I'm fairly new to Unraid and experiencing slow writes on my cache drive.

After 1-2 minutes speeds are dropping to 30-40Mb/s and CPU utilization goes up to over 60%.

It's definitely not a network or SMB issue, it also happens with an external HDD via USB with rsync or coping via SMB from an SSD to the server.

Here are the cache settings and server components:

CPU: i5-11400

MB: ASRock H570M-ITX/ac

RAM: 2x16GB DDR4

NVMe: Crucial P2 CT500P2SSD8 500GB

no other PCIe Devices connected

1658945820_Bildschirmfoto2022-03-03um21_16_05.thumb.png.394b58b9a673a28f881b15b63a87315d.png

 

And the only NVMe relevant logs I could find:

1916580465_Bildschirmfoto2022-03-03um21_13_14.thumb.png.e5741e4a36e18708d9004ccb3e9ce415.png

511131312_Bildschirmfoto2022-03-03um21_14_31.thumb.png.15581fc0a514cf454fc679b73847c00e.png

 

Hope you guys can help me out! So far I really really like Unraid and it gives me a good time for my "Selfhosted Offensive" :)

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